CVE-2026-42004
LOW
3.7
CVSS 3.1
Description
An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.
Metadata
Severity & Metrics
3.7
LOW CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC — CISA Coordinator
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| PowerDNS | DNSdist | — | 1.9.0 < 1.9.15, 2.0.0 < 2.0.7 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| — | cna | Misinterpretation of Input |
| CWE-115 | adp | CWE-115 Misinterpretation of Input |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 3.7 | LOW | 3.1 | cna | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
References (1)